同步皮带轮规格HTD3M理论尺寸表同步皮带轮各种规格主要部位理论尺寸表（挡边尺寸仅供参考）HTD-3M型（节距=3.00mm）规格齿数节径d外径do档边直径df档边内径db档边厚度h15-3M1514.3213.561811116-3M1615.2814.521811117-3M1716.2315.471811118-3M1817.1916.432213119-3M1918.1417.382213120-3M2019.1018.342213121-3M2120.0519.292211122-3M2221.0120.252515123-3M2321.9621.202515124-3M2422.9222.162617125-3M2523.8723.112617126-3M2624.8324.072921127-3M2725.7825.022921128-3M2826.7425.9812921130-3M3028.6527.893221132-3M3230.5629.8034.524.5134-3M3432.4731.7137.828136-3M3634.3833.624027138-3M3836.2935.534027140-3M4038.2037.444432142-3M4240.1139.354432144-3M4442.0241.264838146-3M4643.9343.174838148-3M4845.8445.084838150-3M5047.7546.9951361.260-3M6057.3056.5461451.272-3M7268.7567.9973551.2)